haemopathology

The story

1. Ancient Greekαἷμᾰ (haîmă)
2. Ancient Greekαἱμο- (haimo-)
3. Englishhaemo-
4. Ancient Greekπάσχω (páskhō)
5. Ancient Greekπᾰ́θος (pắthos)
6. Proto-Indo-European*leǵ-
7. Proto-Indo-European*lóǵos
8. Proto-Hellenic*lógos
9. Ancient Greekλόγος (lógos)
10. Frenchpathologie
11. Englishpathology
12. English todayhaemopathology

From haemo- + pathology.